Shell has unveiled the Triple 10 Challenge, a compact battery-electric concept car that charges from 10% to 80% in 9 minutes 54 seconds on a standard 175kW fast charger. The energy company built the Triple 10 Challenge concept car around a dielectric coolant that immerses the battery, electric motor, and power electronics in a single shared cooling circuit. Shell reports the vehicle reaches 6.2 miles/kWh (10 km/kWh) in driving economy, which it says is more than 30% better overall energy efficiency than many current EVs. The car takes its name from three targets Shell set as a mass-market benchmark: that efficiency level, a sub-10-minute charge, and a lifecycle carbon footprint of about 10 tonnes CO2e.
Highlights
- Charges 10% to 80% in 9 minutes 54 seconds on a standard 175kW charger, without compromising thermal stability or lifespan, according to Shell.
- Reaches 6.2 miles/kWh (10 km/kWh) driving economy — more than 30% better overall energy efficiency than many current EVs, the company reports.
- Estimated lifecycle footprint of about 10 tonnes CO2e, which Shell says is roughly 50% lower than a typical European battery-electric vehicle.
- Simplified battery and cooling architecture cuts overall battery pack cost by about 25% versus a conventional EV, per Shell.
One Fluid for the Whole Powertrain
The concept’s defining feature is its cooling system. Shell uses a Shell Recharge dielectric thermal fluid to directly immerse the battery cells, electric motor, and power electronics, replacing the separate water-ethylene-glycol circuits that conventional EVs run for different components. The company describes it as the first road-worthy vehicle to manage the thermal load of an entire powertrain through a single-circuit architecture, including under extreme fast-charging in real-world conditions.
Shell is not the only developer pursuing immersion cooling; other battery makers have submerged cells in dielectric fluid to suppress thermal runaway and support faster charging. Shell positions the simplified housing, built with fewer modules, as the source of both the cost reduction and the weight savings behind the car’s efficiency.
Charging on Existing Infrastructure
Shell’s central charging claim is that the car reaches sub-10-minute charging on hardware already common across public networks. Vehicles that charge in under 10 minutes today generally require ultra-rapid chargers above 300kW, which remain uncommon. On a standard 175kW charger, Shell says the Triple 10 adds about 15 miles per minute (24 km/min) of range, against roughly 8 miles per minute (13 km/min) for a typical battery-electric vehicle on the same charger — almost 90% more range added per minute.
Sub-10-minute charging has become a competitive target across the industry, including in the solid-state battery development The EV Report has covered.
Efficiency, Emissions, and Cost
Shell frames the Triple 10 as an alternative to the industry’s reliance on ever-larger batteries. By pairing a smaller, more efficient battery with the immersion fluid, the company reports the more-than-30% efficiency gain and the roughly 25% battery pack cost reduction. The estimated 10-tonne CO2e lifecycle footprint — about half that of a typical European BEV, per Shell — reflects the lightweight design, smaller battery, low-carbon and recyclable materials, and an assumption of 100% renewable electricity for charging.
Partners and Brand Consolidation
Shell developed the concept with co-engineering partners: RML on the battery pack, Empel Systems on the electric motor and drive unit, and HORIBA MIRA on integration and validation. The car was unveiled at HORIBA MIRA’s proving ground.
“With the Triple 10 Challenge concept car, we have unlocked the potential for faster charging, lighter systems and improved lifecycle efficiency by using our advanced thermal fluids,” said Cara Tredget, VP Mobility & Lubricants Technology for Shell. “Together with our co-engineering partners, we are proud to develop alternative options for sustainable EV development leveraging technologies that are available today and are scalable to support customers into the future.”
Alongside the concept, Shell said it is consolidating its EV charging, fluids, and battery solutions under the Shell Recharge brand for both business and consumer customers, and retiring the Shell EV-Plus brand.
Sign up for our popular weekly email to catch all the latest EV news!
